CVE-2025-4308 is a critical SQL Injection vulnerability identified in version 1.1 of the PHPGurukul Art Gallery Management System, specifically in the /admin/add-art-type.php file. The vulnerability arises from improper sanitization or validation of the 'arttype' parameter, which is susceptible to malicious input manipulation. An attacker can exploit this flaw remotely without any authentication or user interaction, by injecting crafted SQL commands through the 'arttype' argument. This can lead to unauthorized access to the backend database, allowing attackers to read, modify, or delete sensitive data, potentially compromising the confidentiality, integrity, and availability of the system's data. The vulnerability has been publicly disclosed, increasing the risk of exploitation, although no known exploits have been reported in the wild yet. The CVSS 4.0 base score is 6.9 (medium severity), reflecting the ease of remote exploitation without privileges but with limited impact on confidentiality, integrity, and availability. The vulnerability does not require user interaction or authentication, making it more accessible to attackers. The lack of a patch or mitigation guidance from the vendor at this time increases the urgency for organizations to implement compensating controls.

For European organizations using PHPGurukul Art Gallery Management System 1.1, this vulnerability poses a significant risk. Exploitation could lead to unauthorized data disclosure, data tampering, or deletion of critical art gallery records, potentially disrupting business operations and damaging reputation. Given the remote and unauthenticated nature of the attack, threat actors could leverage this vulnerability to gain persistent access or pivot to other internal systems. This is particularly concerning for cultural institutions, museums, or galleries in Europe that rely on this software for managing art collections and transactions. Data breaches could also lead to violations of GDPR regulations, resulting in legal penalties and loss of customer trust. The public disclosure of the vulnerability increases the likelihood of targeted attacks, especially against high-profile or government-affiliated art institutions.

Since no official patch is currently available, European organizations should immediately implement the following mitigations: 1) Restrict access to the /admin/add-art-type.php endpoint using network-level controls such as IP whitelisting or VPN access to limit exposure to trusted administrators only. 2) Employ Web Application Firewalls (WAFs) with custom rules to detect and block SQL injection payloads targeting the 'arttype' parameter. 3) Conduct thorough input validation and sanitization on all user-supplied data, especially parameters used in SQL queries, applying parameterized queries or prepared statements where possible. 4) Monitor logs for suspicious activities related to the vulnerable endpoint and set up alerts for anomalous SQL errors or injection attempts. 5) Plan for an urgent update or patch deployment once the vendor releases a fix, and consider alternative software solutions if timely remediation is not feasible. 6) Educate administrative users about the risks and encourage strong authentication practices to reduce the risk of lateral movement if exploitation occurs.